Re: [quicwg/base-drafts] Clarify that tunnels can send malformed HTTP message, and it is not a connection-level error (#3303)

Jana Iyengar <> Wed, 18 December 2019 04:01 UTC

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Subject: Re: [quicwg/base-drafts] Clarify that tunnels can send malformed HTTP message, and it is not a connection-level error (#3303)
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janaiyengar commented on this pull request.

> @@ -536,6 +536,11 @@ not acting as a tunnel) MUST NOT forward a malformed request or response.
 Malformed requests or responses that are detected MUST be treated as a stream
 error ({{errors}}) of type H3_GENERAL_PROTOCOL_ERROR.
+A tunnel that dispatches HTTP messages to different endpoints might forward a

An intermediary acting as a tunnel could carry HTTP messages from multiple endpoints on one side to a single endpoint on the other side within a single HTTP/3 connection. Such an intermediary might forward malformed HTTP messages as well. To limit the scope of damage to the offending endpoint, an endpoint that detects a malformed request or response MUST NOT escalate this error to a  connection-level error unless specified otherwise.

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